Gel extruding method and apparatus

Details Gel extruding method and apparatus Gel extruding method and apparatus

1979-07-16

1981-07-21

Skaggs, H. Grant

Dispensing

Processes of dispensing

222390, B67B 700, G01F 1100

Patent

active

042793610

ABSTRACT:
A method and apparatus is provided for removing polyacrylamide gels from glass or quartz tubes as required in certain biochemistry laboratory work. Essentially, the invention involves moving the plunger of a syringe in a carefully controlled manner to expel an incompressible liquid from the syringe directly into one end of the gel tube. The force of the liquid which might be water, for example, extrudes the gel from the other end of the tube so that the gel is removed without harming the gel and without shattering or otherwise damaging the gel tube itself. The apparatus of the invention comprises essentially a threaded shaft for operating the plunger of the syringe to provide the controlled movement of liquid against the gel.

REFERENCES:
patent: 2715991 (1955-08-01), Frank et al.
patent: 3273763 (1966-09-01), Gilmont
patent: 3424557 (1969-01-01), Skeggs
patent: 3734358 (1973-05-01), Bergeron
patent: 3986645 (1976-10-01), Baldwin et al.
patent: 4189943 (1980-02-01), Faure

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